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No file is a folder (E) ⇒ conversion⇒ No folder is a file (E). Hence conclusion I follows. Some documents are files (I) + No file is a folder (E) ⇒ Some documents are not folders(O). Hence conclusion II does not follow. All books are folders (A) + [No file is a folder (E)] ⇒ conversion⇒ No folder is a file (E) ⇒ No book is a file (E). Hence conclusion III follows.
A and B can complete a task together in 12 days, while B alone takes 24 days to finish it. A began working alone and left after ‘x’ days, after whic...
X can do a piece of work in 30 days. He worked at it for 5 days and then Y finished it in 20 days. In how many days can X and Y together finish the work?
A, B and C alone can complete a work in 30, 60 and 45 days respectively. All of them started working together but after 3 days from start A left the job...
Naina and Kalpana working together can do a piece of work in 10 days, whereas Naina alone can do it in 12 days. In how many days can Kalpana do it alone?
When working alone, Ansh takes 12 more days than time taken by Ansh and Balu together to finish certain work. If Ansh is 50% more efficient than Balu, t...
A can do a work in 16 days and B can do the same work in 12 days. How long will it take for A and B to complete the work if they work together?
A does 4/5 of a piece of work in 20 days. He then calls in B and they finish the remaining work in 3 days. How long B alone will take to do whole work?
An elephant can do a work as fast as two horses ‘A’ and ‘B’ can do it by working together. If horse ‘A’ alone can complete the work in 9 hou...
126 unit of work can be completed by P alone in 21 days. P started working alone and joined by Q after 10 days such that they completed the remaining wo...
